# OC Root 2nd 3rd 4th 5th PC Gene/Definition OC.677308 Bacteria.270026 Tenericutes.15358 Mycoplasma.9699 - myg.292 myg:ASO20_01685 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Synechocystis.2641 - syn.3381 syn:ssr1399 rps18; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Synechocystis.2641 - syz.1733 syz:MYO_125720 rps18; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Synechocystis.2641 - syy.2526 syy:SYNGTS_2547 rps18; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Synechocystis.2641 - syt.2526 syt:SYNGTI_2546 rps18; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Synechocystis.2641 - sys.2525 sys:SYNPCCN_2545 rps18; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Synechocystis.2641 - syq.2525 syq:SYNPCCP_2545 rps18; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Synechocystis.2641 - syj.854 syj:D082_08220 rps18; SSU ribosomal protein S18p / SSU ribosomal protein S18p, zinc-independent; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Synechocystis.2641 - syo.2573 syo:C7I86_13330 rpsR; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Synechococcus.931 Synechococcus_sp_.24631 syu.2061 syu:M744_11050 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Synechococcus.931 Synechococcus_elongatus.1852 syc.431 syc:syc0426_c rps18; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Synechococcus.931 Synechococcus_elongatus.1852 syf.1120 syf:Synpcc7942_1123 SSU ribosomal protein S18P; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Synechococcus.2610 Synechococcus_sp_.10736 syne.613 syne:Syn6312_0570 SSU ribosomal protein S18P; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Synechococcus.2610 - slw.626 slw:BRW62_03430 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Synechococcus.3274 Synechococcus_sp_.2858 syw.1220 syw:SYNW1225 rps18, rpsR; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Synechococcus.3274 Synechococcus_sp_.2858 syd.1307 syd:Syncc9605_1337 ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Synechococcus.3274 Synechococcus_sp_.2858 sye.1126 sye:Syncc9902_1137 SSU ribosomal protein S18P; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Synechococcus.3274 Synechococcus_sp_.2858 syg.1297 syg:sync_1337 rpsR; ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Synechococcus.3274 Synechococcus_sp_.2858 syr.1215 syr:SynRCC307_1225 rpsR; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Synechococcus.3274 Synechococcus_sp_.2858 syx.1290 syx:SynWH7803_1292 rpsR; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Synechococcus.3274 Synechococcus_sp_.2858 synk.1675 synk:KR100_08640 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Synechococcus.3274 Synechococcus_sp_.2858 synr.442 synr:KR49_02210 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Synechococcus.3274 Synechococcus_sp_.2858 synd.1902 synd:KR52_09800 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Synechococcus.3274 Synechococcus_sp_.2858 syh.1268 syh:Syncc8109_1325 rpsR; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Synechococcus.3274 Synechococcus_sp_.2858 synw.1334 synw:SynWH8103_01359 rpsR; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Synechococcus.6738 Synechococcus_sp_.525 cya.1523 cya:CYA_1651 rpsR; ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Synechococcus.6738 Synechococcus_sp_.525 cyb.1558 cyb:CYB_1633 rpsR; ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Synechococcus.16378 Synechococcus_sp_.14686 synp.689 synp:Syn7502_00649 ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Synechococcus.20100 Synechococcus_sp_.18418 syp.594 syp:SYNPCC7002_A0573 rpsR; ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Thermosynechococcus.1319 - tel.2363 tel:tsr2061 rpsR; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Thermosynechococcus.1319 - thn.1540 thn:NK55_08310 rpsR; 30S ribosomal protein S18 RpsR; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Cyanobium.1468 - cgc.556 cgc:Cyagr_0549 ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Cyanobium.1468 - cyi.603 cyi:CBM981_0584 rpsR; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 - - dsl.1217 dsl:Dacsa_1367 ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 - - cmp.4738 cmp:Cha6605_5590 ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Leptolyngbya.1566 Leptolyngbya_sp_.2862 len.2557 len:LEP3755_25800 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Leptolyngbya.1566 - lbo.699 lbo:LBWT_15510 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Leptolyngbya.8062 Leptolyngbya_sp_.7998 lep.1531 lep:Lepto7376_1659 SSU ribosomal protein S18P; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Leptolyngbya.11412 Leptolyngbya_sp_.11418 let.1177 let:O77CONTIG1_01175 rpsR; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 - - hhg.1770 hhg:XM38_018000 rpsR; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 - - pseu.3272 pseu:Pse7367_3412 SSU ribosomal protein S18P; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Prochlorococcus.1611 Prochlorococcus_sp_.1063 prc.1035 prc:EW14_1024 SSU ribosomal protein S18p; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Prochlorococcus.1611 Prochlorococcus_sp_.3063 prm.1032 prm:EW15_1030 SSU ribosomal protein S18p; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Prochlorococcus.1611 Prochlorococcus_marinus.2066 pma.968 pma:Pro_0968 rpsR; Ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Prochlorococcus.1611 Prochlorococcus_marinus.2066 pmm.872 pmm:PMM0869 rps18, rpsR; 30S Ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Prochlorococcus.1611 Prochlorococcus_marinus.2066 pmi.934 pmi:PMT9312_0932 SSU ribosomal protein S18P; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Prochlorococcus.1611 Prochlorococcus_marinus.2066 pmb.989 pmb:A9601_09931 rpsR; 30S Ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Prochlorococcus.1611 Prochlorococcus_marinus.2066 pmc.948 pmc:P9515_09501 rpsR; 30S Ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Prochlorococcus.1611 Prochlorococcus_marinus.2066 pmg.993 pmg:P9301_09911 rpsR; 30S Ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Prochlorococcus.1611 Prochlorococcus_marinus.2066 pmh.1022 pmh:P9215_10241 rpsR; 30S Ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Prochlorococcus.1611 Prochlorococcus_marinus.2066 pmj.897 pmj:P9211_08951 rpsR; 30S Ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Prochlorococcus.1611 Prochlorococcus_marinus.4970 pmn.360 pmn:PMN2A_0340 SSU ribosomal protein S18P; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Prochlorococcus.1611 Prochlorococcus_marinus.4970 pme.1014 pme:NATL1_10131 rpsR; 30S Ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Prochlorococcus.1611 Prochlorococcus_marinus.6672 pmt.779 pmt:PMT_0740 30S Ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Prochlorococcus.1611 Prochlorococcus_marinus.6672 pmf.1480 pmf:P9303_14781 rpsR; 30S Ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 - - amr.4785 amr:AM1_4812 rpsR; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Microcystis.2678 - mar.4192 mar:MAE_48050 rps18; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Microcystis.2678 - mpk.2432 mpk:VL20_3441 SSU ribosomal protein S18p SSU ribosomal protein S18p zinc-independent; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Microcystis.2678 - miq.848 miq:B5D77_04430 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Cyanobacterium.219 - can.190 can:Cyan10605_0155 SSU ribosomal protein S18P; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Cyanobacterium.219 - csn.1031 csn:Cyast_1052 SSU ribosomal protein S18P; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Cyanobacterium.219 - cyl.1172 cyl:AA637_06245 rpsR; SSU ribosomal protein S18 RpsR; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 - - hao.761 hao:PCC7418_0753 SSU ribosomal protein S18P; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 - - cyu.737 cyu:UCYN_07870 SSU ribosomal protein S18P; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 - - cwa.1566 cwa:CwatDRAFT_2159 Ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 - - glp.2646 glp:Glo7428_2770 SSU ribosomal protein S18P; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Geminocystis.1631 - gen.1982 gen:GM3709_2859 SSU ribosomal protein S18p; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Geminocystis.1631 - gee.3196 gee:GM3708_671 SSU ribosomal protein S18p; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 - - chon.3328 chon:NIES4102_33680 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Cyanothece.4725 - cyp.1621 cyp:PCC8801_1669 ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Cyanothece.4725 - cyh.1648 cyh:Cyan8802_1687 ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Cyanothece.8776 - cyc.3027 cyc:PCC7424_3096 ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Cyanothece.10447 - cyj.2306 cyj:Cyan7822_2229 ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Cyanothece.12615 - cyn.922 cyn:Cyan7425_0902 ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Cyanothece.19078 - cyt.3323 cyt:cce_3347 rps18; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 - - ter.3001 ter:Tery_3729 SSU ribosomal protein S18P; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 - - mic.2285 mic:Mic7113_2393 ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 - - arp.2196 arp:NIES39_E01900 rpsR; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 - - gei.3505 gei:GEI7407_3577 SSU ribosomal protein S18P; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Oscillatoria.1811 - oac.1251 oac:Oscil6304_1153 SSU ribosomal protein S18P; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Oscillatoria.7366 - oni.2059 oni:Osc7112_2147 SSU ribosomal protein S18P; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 - - mpro.559 mpro:BJP34_00950 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 - - cep.3496 cep:Cri9333_3777 SSU ribosomal protein S18P; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Gloeobacter.2434 - gvi.4047 gvi:gvip418 rpsR; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Gloeobacter.2434 - glj.54 glj:GKIL_1035 rpsR; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Gloeobacter.2434 - glj.54 glj:GKIL_3430 rpsR; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Nostoc.2886 Nostoc_sp_.3077 ana.5481 ana:asl4451 rps18; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Nostoc.2886 Nostoc_sp_.3077 nop.2259 nop:Nos7524_2367 ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Nostoc.2886 Nostoc_sp_.3077 non.204 non:NOS3756_01460 rpsR; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Nostoc.5431 - npu.5664 npu:Npun_R4940 ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Nostoc.5431 - nfl.3533 nfl:COO91_03558 RP-S18, small subunit ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Nostoc.9939 Nostoc_sp_.4936 nos.259 nos:Nos7107_0236 SSU ribosomal protein S18P; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Nostoc.9939 Nostoc_sp_.4936 noe.461 noe:CLI64_02215 rpsR; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Trichormus.1387 - ava.1347 ava:Ava_1321 SSU ribosomal protein S18P; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Trichormus.8975 - naz.3412 naz:Aazo_5173 ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Anabaena.3241 Anabaena_sp_.2362 anb.4023 anb:ANA_C20515 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Anabaena.3241 Anabaena_sp_.2362 awa.413 awa:AA650_01745 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Anabaena.9171 - acy.4858 acy:Anacy_5215 SSU ribosomal protein S18P; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 - - csg.5636 csg:Cylst_6151 SSU ribosomal protein S18P; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Calothrix.3641 - calh.3156 calh:IJ00_17255 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Calothrix.8267 - calo.3270 calo:Cal7507_3419 SSU ribosomal protein S18P; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Calothrix.10675 - calt.156 calt:Cal6303_0005 SSU ribosomal protein S18P; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 - - riv.175 riv:Riv7116_0016 ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 - - fis.2221 fis:FIS3754_22720 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 - - nsp.1228 nsp:BMF81_02491 rpsR; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 - - ncn.2487 ncn:BZZ01_13625 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 - - cthe.2094 cthe:Chro_2088 SSU ribosomal protein S18P; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 - - plp.3961 plp:Ple7327_4408 ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Stanieria.2021 - scs.3158 scs:Sta7437_3281 SSU ribosomal protein S18P; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 Stanieria.2021 - stan.3486 stan:STA3757_36460 rps18; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18 OC.677309 Bacteria.270015 Cyanobacteria.12683 - - ceo.663 ceo:ETSB_0750 rpsR; 30S ribosomal protein S18; K02963 small subunit ribosomal protein S18